Electronic throttle body? No throttle control, motor will only idle, turn ignition switch off, then restart it will run. Reduced Engine Power light comes on. Happens for no apparent reason. Very unsafe situation.

- Hubbard , TX, USA

Transmission slipping and the heater circuit.

- Lancaster, TX, USA

2004 Chevy Trailblazer keeps getting cam position sensor fault. Causing check engine light to come on. Seems to be a common problem with this model. We have replaced this part three to four times on our truck. Truck began to run rough engine knocked and had reduced power.

- Winston Salem, NC, USA

The contact owned a 2004 Chevrolet Trailblazer. While driving 40 mph, flames appeared under the front end of the vehicle without warning. The vehicle was completely engulfed in flames and was deemed destroyed. The fire and police departments filed reports. No injuries were reported. The manufacturer was made aware of the failure. The cause of the failure was undetermined. The failure mileage was 80,000. Updated 08/16/16 consumer stated the driver behind him notified him that the fire was coming front underneath of the vehicle. There was no signal or indication that the vehicle was on fire. Updated 6/12/18

- Aguadilla, PR, USA

The vehicle was purchased new in 2004. Since that time the water pump has been replaced twice yielding a total of three water pumps. As of this writing the vehicle has been solely used for private use not commercial use. We currently have 85,000 miles on it. Three water pumps in 85000 miles is wrong as there is no longevity to the part. The problem was noticed in motion and could have caused severe engine/transmission damage if not stopped iimmeadiately.

- Wpb, FL, USA

I believe the person that sold us the Trailblazer knew it was a lemon and we bought an extended warranty through finance company and professional financial services is a shady company alone with nathans auto sales. I have two disables children and this is suppose to be their transportation to surgeries therapy and school. It stays broken down all the tome within a year it has been worked on 15 times also the linkage to them shiftier is broken. I can't afford to pa for a car insurance and work on this vehicle every week. Savannah tire is a rip off too they cannot do engine just change oil. Lemon la and crappy mechanic work.

- Brunswick, GA, USA

The contact owns a 2004 Chevrolet Trailblazer. While driving approximately 40 mph, the reduce engine power warning indicator illuminated. The engine began to vibrate and the vehicle stalled. The contact merged to the side of the road and shut off and restarted the vehicle. The warning indicator went off and the vehicle drove normally; however, the failure recurred on several occasions. The vehicle was taken to an independent mechanic who diagnosed that the throttle sensor failed and needed to be replaced. The vehicle was repaired but the failure persisted. The manufacturer was not made aware of the failure. The approximate failure mileage was 125,000.

- Bensalem, PA, USA

Engine started misfiring on random cylinders, misfire does not stay on same cylinders. Has dramatic loss of power. Diagnostic code says random misfire. Dramatically decreased fuel economy. Bad vibration. Service engine light flashes during misfire. Does not have a constant misfire, it comes and goes.

- Auburn, GA, USA

The contact owns a 2004 Chevrolet Trailblazer. The contact stated that while driving approximately 20 mph, the vehicle stalled without warning. The vehicle was towed to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 140,000.

- Dover, DE, USA

The contact owns a 2004 Chevrolet Trailblazer. The contact stated that while driving at approximately 40 mph, the vehicle stalled. The vehicle was able to restart and functioned as normal. The failure occurred on multiple occasions. The vehicle was not diagnosed or repaired. In addition, the contact stated that while driving at 30 mph, the rear passenger side wheel suddenly separated from the vehicle. The vehicle was towed to the an independent mechanic, who indicated that the lug nuts detached from the wheel causing the wheel to separate from the vehicle. The manufacturer was notified of the failure. The failure mileage was 80,000.

- Memphis , TN, USA

Many times while driving this SUV, the engine has just shut off. It will start right back up. However it is scary and we have tried to figure this out for quite some time now. The worst time was when I was getting on a busy interstate and the car cut off. I don't know if the vehicle was doing this prior to our purchase. I can not get any information from carmax in regard to this. It is well maintained and due to this, I rarely take it out on the road anymore.

- Salisbury, NC, USA

The contact owns a 2004 Chevrolet Trailblazer. The contact stated that after powering off, the vehicle failed to restart. After numerous attempts, the vehicle was able to restart. The vehicle was not taken to a dealer or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 168,000.

- Leivasy, WV, USA

The contact owns a 2004 Chevrolet Trailblazer. The contact stated that the engine fan belt was replaced several times due to a recurring failure. The contact heard a loud noise when the engine was started and discovered that the fan belt was failing. The manufacturer was made aware of the failure. The failure mileage was 56,000 and the current mileage was 137,000. Updated 2/11/14

- Westhaven , CT, USA

The contact owns a 2004 Chevrolet Trailblazer. The contact stated that while driving approximately 70 mph, smoke was coming from the engine. The contact mentioned that the vehicle was overheating without warning. The vehicle was taken to a dealer where the failure was unable to be replicated. The manufacturer was made aware of the failure. The vehicle was not repaired. The approximate failure and current mileage was 125,000.

- Kenoshn, WI, USA

The contact owns a 2004 Chevrolet Trailblazer. The contact stated that while driving 20 mph, the vehicle suddenly accelerated as the check engine warning lamp illuminated. The contact mentioned that in order to stop the vehicle he had to shift into neutral. The vehicle was taken to an independent mechanic where the technician diagnosed that the O2 sensor needed to be replaced and the vehicle control module computer needed to be reprogram. The manufacturer was made aware of the failure but did not offer any assistance. The vehicle was repaired. The failure mileage was 97,000 and the current mileage was 97,500.

- Clearwater, FL, USA

The contact owns a 2004 Chevrolet Trailblazer. While parked with the engine running, the contact heard a loud knocking noise coming from the engine. The vehicle was taken to the dealer for diagnostics. The technician advised that the knocking noise was normal for the type of engine in the vehicle. The vehicle was then taken to an independent mechanic who advised the contact that the pistons in the engine were down sized, causing the noise. The vehicle was not repaired. The approximate failure mileage was 53,000.

- Little Falls, MN, USA